Several states in the USA have a number of positions designated as "policy exempt" meaning that you are an "at will" employee without the usual due process protections. You apply for such a position knowing that they can replace you when the government/governor changes.
In this system, you are not surprised when the govt replaces you. This also happens at the federal level.This system allows you to bring in people who support your party's policy objectives.
What's happening now in Guyana has a thin line between witch-hunting and replacing ineffective people. That's why the Coalition has to be sensitive in how it removes people, or it will be fodder for the LGEs, which is theirs to lose.